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6

Stainless steel is used for making?

  • A. magnets
  • B. tools
  • C. coins and medals
  • D. moving parts of clocks
View Answer & Discuss (12) JAMB 2010
7

In an electrolytic set-up to protect iron from corrosion, the iron is?

  • A. made cathode
  • B. made anode
  • C. used with a metal of lower electropositive potential
  • D. initially coated with tin
View Answer & Discuss (10) JAMB 1994
8

Which of the following is the correct order of decreasing activity of the metals Fe, Ca, Al and Na?

  • A. Fe> Ca> Al> Na
  • B. Na> Ca> Al> Fe
  • C. Al> Fe> Na> Ca
  • D. Ca> Na> Fe>, Al
View Answer & Discuss (5) JAMB 1994
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
9

The electron configuration of \(_{26}Fe^{3+}\) is?

  • A. [Ar]4s23d6
  • B. [AR]4s23d3
  • C. [AR]4s13d4
  • D. [AR]4s03d5
View Answer & Discuss (17) WAEC 2014
10

Which of the following transition metals is not attracted to external magnetic field?

  • A. Cu
  • B. Fe
  • C. Ti
  • D. Zn
View Answer & Discuss (7) WAEC 2014
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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